Techniques for modifying uplink communications to avoid maximum permissible exposure (mpe) in wireless communications

ABSTRACT

Aspects described herein relate to detecting maximum permissible exposure (MPE) events and/or reporting the MPE event, related metrics, associated requests for beam switching or new time division duplexing (TDD) patterns, etc. In an aspect, a MPE event can be detected on at least one component carrier (CC) of multiple CCs configured with a first cell in inter-band carrier aggregation (CA), and one of a MPE report or a beam switching request can be transmitted to a second cell on a different CC of the multiple CCs. In another aspect, the cell can detect the MPE and can transmit, to the device, a beam switching command to switch to a new beam for uplink communications. In another aspect, the cell can transmitting, to another cell having another CC of the multiple CCs configured with the device, an indication to perform beam switching for the device.

CLAIM OF PRIORITY

The present application is a 35 U.S.C. § 371 National Phase ofInternational Patent Application No. PCT/CN2021/076690, entitled“TECHNIQUES FOR MODIFYING UPLINK COMMUNICATIONS TO AVOID MAXIMUMPERMISSIBLE EXPOSURE (MPE) IN WIRELESS COMMUNICATIONS” filed Feb. 18,2021, which claims priority to PCT Patent Application No.PCT/CN2020/076622, entitled “TECHNIQUES FOR MODIFYING UPLINKCOMMUNICATIONS TO AVOID MAXIMUM PERMISSIBLE EXPOSURE (MPE) IN WIRELESSCOMMUNICATIONS” filed Feb. 25, 2020, both of which are assigned to theassignee hereof and hereby expressly incorporated by reference hereinfor all purposes.

BACKGROUND

Aspects of the present disclosure relate generally to wirelesscommunication systems, and more particularly, to maximum permissibleexposure (MPE) compliance.

Wireless communication systems are widely deployed to provide varioustypes of communication content such as voice, video, packet data,messaging, broadcast, and so on. These systems may be multiple-accesssystems capable of supporting communication with multiple users bysharing the available system resources (e.g., time, frequency, andpower). Examples of such multiple-access systems include code-divisionmultiple access (CDMA) systems, time-division multiple access (TDMA)systems, frequency-division multiple access (FDMA) systems, andorthogonal frequency-division multiple access (OFDMA) systems, andsingle-carrier frequency division multiple access (SC-FDMA) systems.

These multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent wireless devices to communicate on a municipal, national,regional, and even global level. For example, a fifth generation (5G)wireless communications technology (which can be referred to as 5G newradio (5G NR)) is envisaged to expand and support diverse usagescenarios and applications with respect to current mobile networkgenerations. In an aspect, 5G communications technology can include:enhanced mobile broadband addressing human-centric use cases for accessto multimedia content, services and data; ultra-reliable-low latencycommunications (URLLC) with certain specifications for latency andreliability; and massive machine type communications, which can allow avery large number of connected devices and transmission of a relativelylow volume of non-delay-sensitive information.

Wireless communication devices, such as user equipment (UEs), can bemandated to comply with maximum permissible exposure (MPE) to preventexposure of radio waves to human bodies. The devices can accordinglydetect MPE events where the device is close to a human body and canapply a power reduction to prevent harm caused by strong radio signals.The devices can transmit signals in certain transmission opportunitiesfor detecting MPE, and can measure signal energy received whentransmitting the signals. Where the received signal energy or othercharacteristics achieve a threshold, the devices can detect the MPEevent and can modify transmission parameters, such as applying the powerreduction, to mitigate MPE.

SUMMARY

The following presents a simplified summary of one or more aspects inorder to provide a basic understanding of such aspects. This summary isnot an extensive overview of all contemplated aspects, and is intendedto neither identify key or critical elements of all aspects nordelineate the scope of any or all aspects. Its sole purpose is topresent some concepts of one or more aspects in a simplified form as aprelude to the more detailed description that is presented later.

According to an aspect, a method of wireless communication is provided.The method includes detecting a maximum permissible exposure (MPE) eventon at least one component carrier (CC) of multiple CCs configured with afirst cell in inter-band carrier aggregation (CA), and transmitting,based on detecting the MPE event, one of a MPE report or a beamswitching request to a second cell on a different CC of the multipleCCs.

In another aspect, a method for wireless communication is provided. Themethod includes determining a MPE event on at least one CC of multipleCCs configured with a device in inter-band CA, and transmitting, to thedevice and based on detecting the MPE event, a beam switching command toswitch to a new beam for uplink communications.

In another aspect, a method of wireless communication is provided. Themethod includes determining a MPE event on at least one CC of multipleCCs configured with a device in inter-band CA, and transmitting, toanother cell having another one of the multiple CCs configured with thedevice, an indication to perform beam switching for the device.

In another aspect, an apparatus for wireless communication is providedthat includes a transceiver, a memory configured to store instructions,and one or more processors communicatively coupled with the memory andthe transceiver. The one or more processors are configured to detect aMPE event on at least one CC of multiple CCs configured with a firstcell in inter-band CA, and transmit, based on detecting the MPE event,one of a MPE report or a beam switching request to a second cell on adifferent CC of the multiple CCs.

In another aspect, an apparatus for wireless communication is providedthat includes a transceiver, a memory configured to store instructions,and one or more processors communicatively coupled with the memory andthe transceiver. The one or more processors are configured to determinea MPE event on at least one CC of multiple CCs configured with a devicein inter-band CA, and transmit, to the device and based on detecting theMPE event, a beam switching command to switch to a new beam for uplinkcommunications.

In another aspect, an apparatus for wireless communication is providedthat includes a transceiver, a memory configured to store instructions,and one or more processors communicatively coupled with the memory andthe transceiver. The one or more processors are configured to determinea MPE event on at least one CC of multiple CCs configured with a devicein inter-band CA, and transmit, to another cell having another one ofthe multiple CCs configured with the device, an indication to performbeam switching for the device.

In another aspect, an apparatus for wireless communication is providedthat includes means for detecting a MPE event on at least one CC ofmultiple CCs configured with a first cell in inter-band CA, and meansfor transmitting, based on detecting the MPE event, one of a MPE reportor a beam switching request to a second cell on a different CC of themultiple CCs.

In another aspect, an apparatus for wireless communication is providedthat includes means for determining a MPE event on at least one CC ofmultiple CCs configured with a device in inter-band CA, and means fortransmitting, to the device and based on detecting the MPE event, a beamswitching command to switch to a new beam for uplink communications.

In another aspect, an apparatus for wireless communication is providedthat includes means for determining a MPE event on at least one CC ofmultiple CCs configured with a device in inter-band CA, and means fortransmitting, to another cell having another one of the multiple CCsconfigured with the device, an indication to perform beam switching forthe device.

In another aspect, a computer-readable medium including code executableby one or more processors for wireless communications is provided. Thecode includes code for detecting a MPE event on at least one CC ofmultiple CCs configured with a first cell in inter-band CA, andtransmitting, based on detecting the MPE event, one of a MPE report or abeam switching request to a second cell on a different CC of themultiple CCs.

In another aspect, a computer-readable medium including code executableby one or more processors for wireless communications is provided. Thecode includes code for determining a MPE event on at least one CC ofmultiple CCs configured with a device in inter-band CA, andtransmitting, to the device and based on detecting the MPE event, a beamswitching command to switch to a new beam for uplink communications.

In another aspect, a computer-readable medium including code executableby one or more processors for wireless communications is provided. Thecode includes code for determining a MPE event on at least one CC ofmultiple CCs configured with a device in inter-band CA, andtransmitting, to another cell having another one of the multiple CCsconfigured with the device, an indication to perform beam switching forthe device.

To the accomplishment of the foregoing and related ends, the one or moreaspects comprise the features hereinafter fully described andparticularly pointed out in the claims. The following description andthe annexed drawings set forth in detail certain illustrative featuresof the one or more aspects. These features are indicative, however, ofbut a few of the various ways in which the principles of various aspectsmay be employed, and this description is intended to include all suchaspects and their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosed aspects will hereinafter be described in conjunction withthe appended drawings, provided to illustrate and not to limit thedisclosed aspects, wherein like designations denote like elements, andin which:

FIG. 1 illustrates an example of a wireless communication system, inaccordance with various aspects of the present disclosure;

FIG. 2 is a block diagram illustrating an example of a UE, in accordancewith various aspects of the present disclosure;

FIG. 3 is a block diagram illustrating an example of a base station, inaccordance with various aspects of the present disclosure;

FIG. 4 is a flow chart illustrating an example of a method for reportingparameters related to a maximum permissible exposure (MPE) event, inaccordance with various aspects of the present disclosure;

FIG. 5 is a flow chart illustrating an example of a method for receivinga report related to an MPE event, in accordance with various aspects ofthe present disclosure;

FIG. 6 illustrates examples of communication timelines for reporting MPEevent information, in accordance with various aspects of the presentdisclosure;

FIG. 7 illustrates an example of a communication timeline andcorresponding time division duplexing (TDD) patterns, in accordance withvarious aspects of the present disclosure; and

FIG. 8 is a block diagram illustrating an example of a MIMOcommunication system including a base station and a UE, in accordancewith various aspects of the present disclosure.

DETAILED DESCRIPTION

Various aspects are now described with reference to the drawings. In thefollowing description, for purposes of explanation, numerous specificdetails are set forth in order to provide a thorough understanding ofone or more aspects. It may be evident, however, that such aspect(s) maybe practiced without these specific details.

The described features generally relate to maximum permissible exposure(MPE) compliance when multiple component carriers (CCs) are configuredfor a device (e.g., a user equipment (UE)). For example, the multipleCCs can be configured in inter-band carrier aggregation (CA) where thedevice can transmit over each of the multiple CCs with one or more cellsto improve wireless communication throughput, reliability, diversity,etc. In one specific example, the CCs can correspond to differentbandwidths (e.g., one CC at 28 gigahertz (GHz) and one CC at 39 GHz, orone CC at 28 GHz and one CC at 60 GHz, etc.). In any case, the devicecan consider multiple (e.g., all) configured CCs in determining MPEand/or attempting to modify communications to avoid or remediate MPE.

Aspects described herein relate to adjusting uplink communications overone or more CCs to avoid or remediate MPE. For example, uplink beamswitching can be performed to switch an uplink beam used by the UE intransmitting uplink communications to one or more cells such to avoidusing a beam that may cause a MPE event. In this example, an uplink beamswitching request can be sent on a different CC than a CC on whichcommunications are causing, or potentially cause, MPE, which canincrease likelihood that the request is received during MPE on the otherCC. In another example, a slot format used in communicating with one ormore cells can be modified to remove or decrease uplink transmissionopportunities with the one or more cells in the slot such to avoid orremediate an MPE event.

The described features will be presented in more detail below withreference to FIGS. 1-8 .

As used in this application, the terms “component,” “module,” “system”and the like are intended to include a computer-related entity, such asbut not limited to hardware, firmware, a combination of hardware andsoftware, software, or software in execution. For example, a componentmay be, but is not limited to being, a process running on a processor, aprocessor, an object, an executable, a thread of execution, a program,and/or a computer. By way of illustration, both an application runningon a computing device and the computing device can be a component. Oneor more components can reside within a process and/or thread ofexecution and a component can be localized on one computer and/ordistributed between two or more computers. In addition, these componentscan execute from various computer readable media having various datastructures stored thereon. The components can communicate by way oflocal and/or remote processes such as in accordance with a signal havingone or more data packets, such as data from one component interactingwith another component in a local system, distributed system, and/oracross a network such as the Internet with other systems by way of thesignal.

Techniques described herein may be used for various wirelesscommunication systems such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, andother systems. The terms “system” and “network” may often be usedinterchangeably. A CDMA system may implement a radio technology such asCDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000covers IS-2000, IS-95, and IS-856 standards. IS-2000 Releases 0 and Aare commonly referred to as CDMA2000 1×, 1×, etc. IS-856 (TIA-856) iscommonly referred to as CDMA2000 1×EV-DO, High Rate Packet Data (HRPD),etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. ATDMA system may implement a radio technology such as Global System forMobile Communications (GSM). An OFDMA system may implement a radiotechnology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA),IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM™, etc.UTRA and E-UTRA are part of Universal Mobile Telecommunication System(UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are newreleases of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, andGSM are described in documents from an organization named “3rdGeneration Partnership Project” (3GPP). CDMA2000 and UMB are describedin documents from an organization named “3rd Generation PartnershipProject 2” (3GPP2). The techniques described herein may be used for thesystems and radio technologies mentioned above as well as other systemsand radio technologies, including cellular (e.g., LTE) communicationsover a shared radio frequency spectrum band. The description below,however, describes an LTE/LTE-A system for purposes of example, and LTEterminology is used in much of the description below, although thetechniques are applicable beyond LTE/LTE-A applications (e.g., to fifthgeneration (5G) new radio (NR) networks or other next generationcommunication systems).

The following description provides examples, and is not limiting of thescope, applicability, or examples set forth in the claims. Changes maybe made in the function and arrangement of elements discussed withoutdeparting from the scope of the disclosure. Various examples may omit,substitute, or add various procedures or components as appropriate. Forinstance, the methods described may be performed in an order differentfrom that described, and various steps may be added, omitted, orcombined. Also, features described with respect to some examples may becombined in other examples.

Various aspects or features will be presented in terms of systems thatcan include a number of devices, components, modules, and the like. Itis to be understood and appreciated that the various systems can includeadditional devices, components, modules, etc. and/or may not include allof the devices, components, modules etc. discussed in connection withthe figures. A combination of these approaches can also be used.

FIG. 1 is a diagram illustrating an example of a wireless communicationssystem and an access network 100. The wireless communications system(also referred to as a wireless wide area network (WWAN)) can includebase stations 102, UEs 104, an Evolved Packet Core (EPC) 160, and/or a5G Core (5GC) 190. The base stations 102 may include macro cells (highpower cellular base station) and/or small cells (low power cellular basestation). The macro cells can include base stations. The small cells caninclude femtocells, picocells, and microcells. In an example, the basestations 102 may also include gNBs 180, as described further herein. Inone example, some nodes of the wireless communication system may have amodem 240 and communicating component 242 for detecting and/or reportinginformation related to a MPE event when inter-band CA is configured, inaccordance with aspects described herein. In addition, some nodes mayhave a modem 340 and scheduling component 342 for configuring and/orcommunicating using inter-band CA, in accordance with aspects describedherein. Though a UE 104 is shown as having the modem 240 andcommunicating component 242 and a base station 102/gNB 180 is shown ashaving the modem 340 and scheduling component 342, this is oneillustrative example, and substantially any node or type of node mayinclude a modem 240 and communicating component 242 and/or a modem 340and scheduling component 342 for providing corresponding functionalitiesdescribed herein.

The base stations 102 configured for 4G LTE (which can collectively bereferred to as Evolved Universal Mobile Telecommunications System (UMTS)Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC160 through backhaul links 132 (e.g., using an S1 interface). The basestations 102 configured for 5G NR (which can collectively be referred toas Next Generation RAN (NG-RAN)) may interface with 5GC 190 throughbackhaul links 184. In addition to other functions, the base stations102 may perform one or more of the following functions: transfer of userdata, radio channel ciphering and deciphering, integrity protection,header compression, mobility control functions (e.g., handover, dualconnectivity), inter-cell interference coordination, connection setupand release, load balancing, distribution for non-access stratum (NAS)messages, NAS node selection, synchronization, radio access network(RAN) sharing, multimedia broadcast multicast service (MBMS), subscriberand equipment trace, RAN information management (RIM), paging,positioning, and delivery of warning messages. The base stations 102 maycommunicate directly or indirectly (e.g., through the EPC 160 or 5GC190) with each other over backhaul links 134 (e.g., using an X2interface). The backhaul links 134 may be wired or wireless.

The base stations 102 may wirelessly communicate with one or more UEs104. Each of the base stations 102 may provide communication coveragefor a respective geographic coverage area 110. There may be overlappinggeographic coverage areas 110. For example, the small cell 102′ may havea coverage area 110′ that overlaps the coverage area 110 of one or moremacro base stations 102. A network that includes both small cell andmacro cells may be referred to as a heterogeneous network. Aheterogeneous network may also include Home Evolved Node Bs (eNBs)(HeNBs), which may provide service to a restricted group, which can bereferred to as a closed subscriber group (CSG). The communication links120 between the base stations 102 and the UEs 104 may include uplink(UL) (also referred to as reverse link) transmissions from a UE 104 to abase station 102 and/or downlink (DL) (also referred to as forward link)transmissions from a base station 102 to a UE 104. The communicationlinks 120 may use multiple-input and multiple-output (MIMO) antennatechnology, including spatial multiplexing, beamforming, and/or transmitdiversity. The communication links may be through one or more carriers.The base stations 102/UEs 104 may use spectrum up to Y MHz (e.g., 5, 10,15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrieraggregation of up to a total of Yx MHz (e.g., for x component carriers)used for transmission in the DL and/or the UL direction. The carriersmay or may not be adjacent to each other. Allocation of carriers may beasymmetric with respect to DL and UL (e.g., more or less carriers may beallocated for DL than for UL). The component carriers may include aprimary component carrier and one or more secondary component carriers.A primary component carrier may be referred to as a primary cell (PCell)and a secondary component carrier may be referred to as a secondary cell(SCell).

In another example, certain UEs 104 may communicate with each otherusing device-to-device (D2D) communication link 158. The D2Dcommunication link 158 may use the DL/UL WWAN spectrum. The D2Dcommunication link 158 may use one or more sidelink channels, such as aphysical sidelink broadcast channel (PSBCH), a physical sidelinkdiscovery channel (PSDCH), a physical sidelink shared channel (PSSCH),and a physical sidelink control channel (PSCCH). D2D communication maybe through a variety of wireless D2D communications systems, such as forexample, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE802.11 standard, LTE, or NR.

The wireless communications system may further include a Wi-Fi accesspoint (AP) 150 in communication with Wi-Fi stations (STAs) 152 viacommunication links 154 in a 5 GHz unlicensed frequency spectrum. Whencommunicating in an unlicensed frequency spectrum, the STAs 152/AP 150may perform a clear channel assessment (CCA) prior to communicating inorder to determine whether the channel is available.

The small cell 102′ may operate in a licensed and/or an unlicensedfrequency spectrum. When operating in an unlicensed frequency spectrum,the small cell 102′ may employ NR and use the same 5 GHz unlicensedfrequency spectrum as used by the Wi-Fi AP 150. The small cell 102′,employing NR in an unlicensed frequency spectrum, may boost coverage toand/or increase capacity of the access network.

A base station 102, whether a small cell 102′ or a large cell (e.g.,macro base station), may include an eNB, gNodeB (gNB), or other type ofbase station. Some base stations, such as gNB 180 may operate in atraditional sub 6 GHz spectrum, in millimeter wave (mmW) frequencies,and/or near mmW frequencies in communication with the UE 104. When thegNB 180 operates in mmW or near mmW frequencies, the gNB 180 may bereferred to as an mmW base station. Extremely high frequency (EHF) ispart of the RF in the electromagnetic spectrum. EHF has a range of 30GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters.Radio waves in the band may be referred to as a millimeter wave. NearmmW may extend down to a frequency of 3 GHz with a wavelength of 100millimeters. The super high frequency (SHF) band extends between 3 GHzand 30 GHz, also referred to as centimeter wave. Communications usingthe mmW/near mmW radio frequency band has extremely high path loss and ashort range. The mmW base station 180 may utilize beamforming 182 withthe UE 104 to compensate for the extremely high path loss and shortrange. A base station 102 referred to herein can include a gNB 180.

The EPC 160 may include a Mobility Management Entity (MME) 162, otherMMEs 164, a Serving Gateway 166, a Multimedia Broadcast MulticastService (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC)170, and a Packet Data Network (PDN) Gateway 172. The MME 162 may be incommunication with a Home Subscriber Server (HSS) 174. The MME 162 isthe control node that processes the signaling between the UEs 104 andthe EPC 160. Generally, the MME 162 provides bearer and connectionmanagement. All user Internet protocol (IP) packets are transferredthrough the Serving Gateway 166, which itself is connected to the PDNGateway 172. The PDN Gateway 172 provides UE IP address allocation aswell as other functions. The PDN Gateway 172 and the BM-SC 170 areconnected to the IP Services 176. The IP Services 176 may include theInternet, an intranet, an IP Multimedia Subsystem (IMS), a PS StreamingService, and/or other IP services. The BM-SC 170 may provide functionsfor MBMS user service provisioning and delivery. The BM-SC 170 may serveas an entry point for content provider MBMS transmission, may be used toauthorize and initiate MBMS Bearer Services within a public land mobilenetwork (PLMN), and may be used to schedule MBMS transmissions. The MBMSGateway 168 may be used to distribute MBMS traffic to the base stations102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN)area broadcasting a particular service, and may be responsible forsession management (start/stop) and for collecting eMBMS relatedcharging information.

The 5GC 190 may include a Access and Mobility Management Function (AMF)192, other AMFs 193, a Session Management Function (SMF) 194, and a UserPlane Function (UPF) 195. The AMF 192 may be in communication with aUnified Data Management (UDM) 196. The AMF 192 can be a control nodethat processes the signaling between the UEs 104 and the 5GC 190.Generally, the AMF 192 can provide QoS flow and session management. UserInternet protocol (IP) packets (e.g., from one or more UEs 104) can betransferred through the UPF 195. The UPF 195 can provide UE IP addressallocation for one or more UEs, as well as other functions. The UPF 195is connected to the IP Services 197. The IP Services 197 may include theInternet, an intranet, an IP Multimedia Subsystem (IMS), a PS StreamingService, and/or other IP services.

The base station may also be referred to as a gNB, Node B, evolved NodeB (eNB), an access point, a base transceiver station, a radio basestation, a radio transceiver, a transceiver function, a basic serviceset (BSS), an extended service set (ESS), a transmit reception point(TRP), or some other suitable terminology. The base station 102 providesan access point to the EPC 160 or 5GC 190 for a UE 104. Examples of UEs104 include a cellular phone, a smart phone, a session initiationprotocol (SIP) phone, a laptop, a personal digital assistant (PDA), asatellite radio, a global positioning system, a multimedia device, avideo device, a digital audio player (e.g., MP3 player), a camera, agame console, a tablet, a smart device, a wearable device, a vehicle, anelectric meter, a gas pump, a large or small kitchen appliance, ahealthcare device, an implant, a sensor/actuator, a display, or anyother similar functioning device. Some of the UEs 104 may be referred toas IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heartmonitor, etc.). IoT UEs may include machine type communication(MTC)/enhanced MTC (eMTC, also referred to as category (CAT)-M, Cat M1)UEs, NB-IoT (also referred to as CAT NB1) UEs, as well as other types ofUEs. In the present disclosure, eMTC and NB-IoT may refer to futuretechnologies that may evolve from or may be based on these technologies.For example, eMTC may include FeMTC (further eMTC), eFeMTC (enhancedfurther eMTC), mMTC (massive MTC), etc., and NB-IoT may include eNB-IoT(enhanced NB-IoT), FeNB-IoT (further enhanced NB-IoT), etc. The UE 104may also be referred to as a station, a mobile station, a subscriberstation, a mobile unit, a subscriber unit, a wireless unit, a remoteunit, a mobile device, a wireless device, a wireless communicationsdevice, a remote device, a mobile subscriber station, an accessterminal, a mobile terminal, a wireless terminal, a remote terminal, ahandset, a user agent, a mobile client, a client, or some other suitableterminology.

In an example, communicating component 242 can detect a MPE event basedon multiple CCs configured in inter-band CA and can transmit one or moreof a MPE report or an associated request, which may include a beamswitching request or a request for a new time division duplexing (TDD)pattern, to the base station 102, as described further herein.Scheduling component 342 can receive the MPE report or associatedrequest and can modify uplink communications to avoid or remediate theMPE. For example, scheduling component 342 can transmit a beam switchingcommand, a new TDD pattern, and/or the like to the UE 104. In anotherexample, scheduling component 342 can transmit an indication to anotherbase station 102 providing another one of the cells in CA to perform thebeam switching with the UE 104. In any case, uplink communications canbe modified based on detecting MPE to avoid or remediate the MPE.

Turning now to FIGS. 2-8 , aspects are depicted with reference to one ormore components and one or more methods that may perform the actions oroperations described herein, where aspects in dashed line may beoptional. Although the operations described below in FIGS. 4-5 arepresented in a particular order and/or as being performed by an examplecomponent, it should be understood that the ordering of the actions andthe components performing the actions may be varied, depending on theimplementation. Moreover, it should be understood that the followingactions, functions, and/or described components may be performed by aspecially programmed processor, a processor executing speciallyprogrammed software or computer-readable media, or by any othercombination of a hardware component and/or a software component capableof performing the described actions or functions.

Referring to FIG. 2 , one example of an implementation of UE 104 mayinclude a variety of components, some of which have already beendescribed above and are described further herein, including componentssuch as one or more processors 212 and memory 216 and transceiver 202 incommunication via one or more buses 244, which may operate inconjunction with modem 240 and/or communicating component 242 fordetecting and/or reporting information related to a MPE event wheninter-band CA is configured, in accordance with aspects describedherein.

In an aspect, the one or more processors 212 can include a modem 240and/or can be part of the modem 240 that uses one or more modemprocessors. Thus, the various functions related to communicatingcomponent 242 may be included in modem 240 and/or processors 212 and, inan aspect, can be executed by a single processor, while in otheraspects, different ones of the functions may be executed by acombination of two or more different processors. For example, in anaspect, the one or more processors 212 may include any one or anycombination of a modem processor, or a baseband processor, or a digitalsignal processor, or a transmit processor, or a receiver processor, or atransceiver processor associated with transceiver 202. In other aspects,some of the features of the one or more processors 212 and/or modem 240associated with communicating component 242 may be performed bytransceiver 202.

Also, memory 216 may be configured to store data used herein and/orlocal versions of applications 275 or communicating component 242 and/orone or more of its subcomponents being executed by at least oneprocessor 212. Memory 216 can include any type of computer-readablemedium usable by a computer or at least one processor 212, such asrandom access memory (RAM), read only memory (ROM), tapes, magneticdiscs, optical discs, volatile memory, non-volatile memory, and anycombination thereof. In an aspect, for example, memory 216 may be anon-transitory computer-readable storage medium that stores one or morecomputer-executable codes defining communicating component 242 and/orone or more of its subcomponents, and/or data associated therewith, whenUE 104 is operating at least one processor 212 to execute communicatingcomponent 242 and/or one or more of its subcomponents.

Transceiver 202 may include at least one receiver 206 and at least onetransmitter 208. Receiver 206 may include hardware, firmware, and/orsoftware code executable by a processor for receiving data, the codecomprising instructions and being stored in a memory (e.g.,computer-readable medium). Receiver 206 may be, for example, a radiofrequency (RF) receiver. In an aspect, receiver 206 may receive signalstransmitted by at least one base station 102. Additionally, receiver 206may process such received signals, and also may obtain measurements ofthe signals, such as, but not limited to, Ec/Io, signal-to-noise ratio(SNR), reference signal received power (RSRP), received signal strengthindicator (RSSI), etc. Transmitter 208 may include hardware, firmware,and/or software code executable by a processor for transmitting data,the code comprising instructions and being stored in a memory (e.g.,computer-readable medium). A suitable example of transmitter 208 mayincluding, but is not limited to, an RF transmitter.

Moreover, in an aspect, UE 104 may include RF front end 288, which mayoperate in communication with one or more antennas 265 and transceiver202 for receiving and transmitting radio transmissions, for example,wireless communications transmitted by at least one base station 102 orwireless transmissions transmitted by UE 104. RF front end 288 may beconnected to one or more antennas 265 and can include one or morelow-noise amplifiers (LNAs) 290, one or more switches 292, one or morepower amplifiers (PAs) 298, and one or more filters 296 for transmittingand receiving RF signals.

In an aspect, LNA 290 can amplify a received signal at a desired outputlevel. In an aspect, each LNA 290 may have a specified minimum andmaximum gain values. In an aspect, RF front end 288 may use one or moreswitches 292 to select a particular LNA 290 and its specified gain valuebased on a desired gain value for a particular application.

Further, for example, one or more PA(s) 298 may be used by RF front end288 to amplify a signal for an RF output at a desired output powerlevel. In an aspect, each PA 298 may have specified minimum and maximumgain values. In an aspect, RF front end 288 may use one or more switches292 to select a particular PA 298 and its specified gain value based ona desired gain value for a particular application.

Also, for example, one or more filters 296 can be used by RF front end288 to filter a received signal to obtain an input RF signal. Similarly,in an aspect, for example, a respective filter 296 can be used to filteran output from a respective PA 298 to produce an output signal fortransmission. In an aspect, each filter 296 can be connected to aspecific LNA 290 and/or PA 298. In an aspect, RF front end 288 can useone or more switches 292 to select a transmit or receive path using aspecified filter 296, LNA 290, and/or PA 298, based on a configurationas specified by transceiver 202 and/or processor 212.

As such, transceiver 202 may be configured to transmit and receivewireless signals through one or more antennas 265 via RF front end 288.In an aspect, transceiver may be tuned to operate at specifiedfrequencies such that UE 104 can communicate with, for example, one ormore base stations 102 or one or more cells associated with one or morebase stations 102. In an aspect, for example, modem 240 can configuretransceiver 202 to operate at a specified frequency and power levelbased on the UE configuration of the UE 104 and the communicationprotocol used by modem 240.

In an aspect, modem 240 can be a multiband-multimode modem, which canprocess digital data and communicate with transceiver 202 such that thedigital data is sent and received using transceiver 202. In an aspect,modem 240 can be multiband and be configured to support multiplefrequency bands for a specific communications protocol. In an aspect,modem 240 can be multimode and be configured to support multipleoperating networks and communications protocols. In an aspect, modem 240can control one or more components of UE 104 (e.g., RF front end 288,transceiver 202) to enable transmission and/or reception of signals fromthe network based on a specified modem configuration. In an aspect, themodem configuration can be based on the mode of the modem and thefrequency band in use. In another aspect, the modem configuration can bebased on UE configuration information associated with UE 104 as providedby the network during cell selection and/or cell reselection.

In an aspect, communicating component 242 can optionally include a MPEdetecting component 252 for detecting an MPE event or one or morerelated parameters at the UE 104 and/or transmitting a MPE report orassociated request to one or more base stations, and/or an uplinkmodifying component 254 for modifying one or more uplink communicationparameters based on detecting the MPE, in accordance with aspectsdescribed herein.

In an aspect, the processor(s) 212 may correspond to one or more of theprocessors described in connection with the UE in FIG. 8 . Similarly,the memory 216 may correspond to the memory described in connection withthe UE in FIG. 8 .

Referring to FIG. 3 , one example of an implementation of base station102 (e.g., a base station 102 and/or gNB 180, as described above) mayinclude a variety of components, some of which have already beendescribed above, but including components such as one or more processors312 and memory 316 and transceiver 302 in communication via one or morebuses 344, which may operate in conjunction with modem 340 andscheduling component 342 for configuring and/or communicating usinginter-band CA, in accordance with aspects described herein.

The transceiver 302, receiver 306, transmitter 308, one or moreprocessors 312, memory 316, applications 375, buses 344, RF front end388, LNAs 390, switches 392, filters 396, PAs 398, and one or moreantennas 365 may be the same as or similar to the correspondingcomponents of UE 104, as described above, but configured or otherwiseprogrammed for base station operations as opposed to UE operations.

In an aspect, scheduling component 342 can optionally include a MPEprocessing component 352 for receiving parameters related to detectingan MPE and/or reporting parameters or related indication to another basestation, in accordance with aspects described herein.

In an aspect, the processor(s) 312 may correspond to one or more of theprocessors described in connection with the base station in FIG. 8 .Similarly, the memory 316 may correspond to the memory described inconnection with the base station in FIG. 8 .

FIG. 4 illustrates a flow chart of an example of a method 400 fordetecting and/or reporting information related to an MPE event whenconfigured for inter-band CA. In an example, a UE 104 can perform thefunctions described in method 400 using one or more of the componentsdescribed in FIGS. 1 and 2 . In inter-band CA, for example, the UE 104can concurrently communicate with a first cell, which may be in a firstfrequency band and may have at least one CC, and with a second cell,which may be in the first or a second frequency band and may have atleast one CC.

In method 400, at Block 402, a MPE event can be determined on at leastone CC of multiple CCs configured with a first cell in inter-band CA. Inan aspect, MPE detecting component 252, e.g., in conjunction withprocessor(s) 212, memory 216, transceiver 202, communicating component242, etc., can determine the MPE event on at least one CC of themultiple CCs configured with the first cell in inter-band CA. Forexample, MPE detecting component 252 may determine the MPE event basedon one or more beams configured for communicating over the at least oneCC of the multiple CCs with the first cell. In an example, MPE detectingcomponent 252 may determine the MPE event, or otherwise to reportinformation regarding an MPE event or other associated requests, basedon comparing one or more parameter values related to transmitting uplinkcommunications to one or more thresholds. The one or more parametervalues, for example, may be related to transmitting the uplinkcommunications using the one or more beams configured for the at leastone CC.

In a specific example, MPE detecting component 252 can determine the MPEevent based at least in part on measuring a maximum power reduction(MPR) parameter value configured for one or more of the cells or CCsconfigured in inter-band CA. For example, each cell can configure a MPRparameter value for the UE 104 to apply a power reduction in variousscenarios. An example of a MPR parameter value used in fifth generation(5G) new radio (NR) is defined in third generation partnership project(3GPP) technical specification (TS) 38.101-2, which may include a MPR,additional MPR (A-MPR), power management MPR (P-MPR), etc., as describedin sections 6.2A.1, 6.2A.2, 6.2A.3, 6.2.4.

For example, the total configured power P_(CMAX) in a transmissionoccasion can be the sum of the configured power for carrier f of servingcell c with non-zero granted transmission power in the respectivereference point. The total configured UE maximum output power PCMAX, asdefined for 5G NR, can be set such that the corresponding measured totalpeak effective isotropic radiated power (EIRP) PUMAX is within thefollowing bounds

PPowerclass−MAX(MAX(MPR,A_MPR),P-MPR)−MAX{T(MAX(MPR,A_MPR)),T(P-MPR)}≤PUMAX≤EIRPmax

where PPowerclass represents the UE power class as specified insub-clause 6.2A.1, EIRPmax represents the applicable maximum EIRP asspecified in sub-clause 6.2A.1, MPR is as specified in sub-clause6.2A.2, A-MPR as specified in sub-clause 6.2A.3, P-MPR the powermanagement term for the UE as described in 6.2.4 and TRPmax representsthe maximum total radiated power (TRP) for the UE power class asspecified in sub-clause 6.2A.1. PUMAX is defined as 10*log10(ΣpUMAX,fIi),c(j)) for each carrier f (i=1 . . . n) and serving cell c(j=1 . . . m) where pUMAX,fIi),c(j) is linear value of PUMAX,fIi),c(j).In an example, MPE detecting component 252 can determine MPE where P-MPRfor a cell achieves a threshold.

In method 400, at Block 404, one of a MPE report or an associatedrequest can be transmitted to a second cell on a different CC of themultiple CCs. In an aspect, MPE detecting component 252, e.g., inconjunction with processor(s) 212, memory 216, transceiver 202,communicating component 242, etc., can transmit, based on detecting theMPE event, one of the MPE report or the associated request to the secondcell on the different CC of the multiple CCs. This can improve thelikelihood that a base station can receive and process the MPE report orassociated request. For example, as described further herein, based onthe MPE report or other request, the base station 102 can transmit abeam switching command, a new TDD pattern, etc. to the UE 104 to modifyuplink communications therewith. For example, MPE detecting component252 can transmit the MPE report, an uplink beam switching request, a newTDD pattern request, etc. to the base station 102 over a media accesscontrol (MAC) control element (CE), a physical uplink control channel(PUCCH) transmission, layer 3 (L3) reporting, etc.

For example, MPE detecting component 252 can transmit the MPE report orbeam switching request with one or more parameters corresponding to thecell, CC, beam, etc. for which the MPE is detected. For example, MPEdetecting component 252 can transmit the MPE report or beam switchingrequest including, for example, at least one band identifier (e.g., fromFrequencyInfoUL), cell identifier(s), bandwidth part (BWP) identifier(s)of a BWP used for the CC, old uplink beam identifier(s), new uplink beamidentifiers(s) (e.g., requested to be used in communicating with thecell over the CC), etc. For example, the new uplink beam identifier(s)can be requested to replace the old uplink beam identifier(s). In anexample, a band identifier may indicate a group of cells (e.g., morethan one cell) in the frequency band. By default, in one example, allthe cells on the frequency band may be reported. In addition, forexample, MPE detecting component 252 can transmit the request on cellsof the live band or both the bands (e.g., from FrequencyInfoUL). Thelive band, as referred to herein, is a frequency band or a correspondingCC having less impact due to the MPE (e.g., a frequency band or CC withthe second cell in this example).

In this example, in method 400, optionally at Block 406, the MPE reportor the associated request can be transmitted to the first cell. In anaspect, MPE detecting component 252, e.g., in conjunction withprocessor(s) 212, memory 216, transceiver 202, communicating component242, etc., can transmit the MPE report or the associated request to thefirst cell as well. For example, transmitting the MPE report to thefirst cell can refer to transmitting the MPE report to a base stationthat provides the first cell, transmitting the MPE report over a CCconfigured in the cell, etc. In one specific example, MPE detectingcomponent 252 can transmit MPE report at carrier f_(i) of cell c_(j),and can transmit the beam switching request on either or both carrierf_(n) of cell c_(m) and carrier f_(i) of cell c_(j).

In method 400, optionally at Block 408, a beam switching command fromthe first cell to switch to a new beam can be received over the at leastone CC and based on transmitting the MPE report or the associatedrequest. In an aspect, uplink modifying component 254, e.g., inconjunction with processor(s) 212, memory 216, transceiver 202,communicating component 242, etc., can receive, over the at least one CCof the multiple CCs and based on transmitting the MPE report or theassociated request, the beam switching command from the first cell toswitch to the new beam. For example, the new beam may have differentspatial properties (e.g., different spatial direction) than a beam usedin previously communicating with the first cell, and may accordingly notcause or be subject to the MPE event. In addition, in one exampledescribed above, the MPE report transmitted at Block 404 can relate tomultiple cells and/or CCs, and can be transmitted (e.g., by the secondcell) to additional cells. Accordingly, in an example, receiving thebeam switching command at Block 408 may include receiving beam switchingcommands from or related to multiple cells.

In method 400, optionally at Block 410, an uplink transmission can betransmitted to the first cell based on the new beam. In an aspect,communicating component 242, e.g., in conjunction with processor(s) 212,memory 216, transceiver 202, etc., can transmit the uplink transmissionto the first cell based on the new beam. For example, communicatingcomponent 242 can generate the new beam for subsequent uplinkcommunications. Generating the new beam, for example, may includeselectively applying power to or activating different antenna module(s)or resources of the UE 104 to achieve the different spatial direction.For example, the beams can be configured at the UE 104, and the beamswitching command received at Block 406 may include an identifier of aconfigured beam. In addition, for example, where multiple beam switchingcommands are received at Block 408, communicating component 242 cantransmit uplink communications to multiple cells using multiple newbeams. In any case, for example, communicating component 242 cangenerate the new beam based on determining the identifier and relatedparameters for powering, activating, or otherwise using antenna modulesor other antenna resources of the UE 104 to generate the new beam. Inanother example, the beam switching command may include parametersrelated to generating the beam, such as an indication of antenna modulesor resources to power, activate, etc., an indication of a directionalityfor the beam, etc. A specific example is shown in FIG. 6 .

FIG. 6 illustrates an example of a communication timeline 600 forcommunicating with a gNB in cell 0, and a communication timeline 602 forcommunicating with a gNB in cell 1 using inter-band CA. For example, theUE in timelines 600 and 602 can be the same UE, but the gNBs may be thesame or different gNBs that provide different cells. In one specificexample, cell 0 can be in one frequency band, and cell 1 can be inanother frequency band. In communication timeline 600, the UE cantransmit an uplink transmission with beam b11 to the gNB in cell 0, andcan also transmit, in a similar occasion or time period, an uplinktransmission with beam b21 to the gNB in cell 1. For example, occasionsor time periods for transmitting communications, as described herein,can include an orthogonal frequency division multiplexing (OFDM) symbol,a single-carrier frequency division multiplexing (SC-FDM) symbol, acollection of symbols, a slot of multiple symbols, a collection ofmultiple slots, a transmission time interval (TTI) (which may includeone or more symbols or one or more slots of symbols), as defined in aradio access technology, etc. In a subsequent time period, in timeline602, the UE can determine to deprioritize transmission on beam b21 dueto detecting MPE on the beam or with the cell 1, etc.

For example, UE 104 can deprioritize the transmission based ondetermining a P-MPR configured by cell 1 (or that the P-MPR achieves athreshold). Based on deprioritizing the transmission associated withbeam b21 or otherwise determining a MPE event, the UE can transmit a MPEreport (or beam switching request) to the gNB in cell 0 in the same orsubsequent time period. Transmitting the MPE report (or beam switchingrequest) to the gNB in cell 0 can improve the likelihood that thenetwork receives the report and/or request where the uplinktransmissions for cell 0 are not deprioritized. As described, forexample, the UE can determine to transmit the MPE report (or beamswitching request) to the gNB in cell 0 based on determining that theMPE (or P-MPR above a threshold) corresponds to the other cell (cell 1).The gNB in cell 0 can receive the MPE report (or beam switching request)and can accordingly notify the gNB of cell 1 of MPE at the UE and/orrelated information. The gNB of cell 1 can transmit an uplink beamswitching command to the UE to switch the uplink beam in communicatingwith cell 1 to beam b22. In a subsequent time period, the UE cantransmit an uplink transmission with beam b22 to the gNB in cell 1,and/or can also transmit, in a similar occasion or time period, anuplink transmission with beam b11 to the gNB in cell 0.

In another example, where transmitting the associated request at Block404 includes transmitting a request for a new TDD pattern, in method400, optionally at Block 412, a modified TDD pattern can be receivedfrom at least one of the first cell or the second cell. In an aspect,uplink modifying component 254, e.g., in conjunction with processor(s)212, memory 216, transceiver 202, communicating component 242, etc., canreceive, from at least one of the first cell or the second cell, themodified TDD pattern. For example, the modified TDD pattern can decreaseor remove a number of time periods allocated for uplink communicationsfor the first cell. In an example, the modified TDD pattern mayadditionally or alternatively increase a number of time periodsallocated for uplink communications for the second cell or other cellsnot having the MPE event.

In a specific example, MPE detecting component 252 can transmit the TDDpattern change request on MAC-CE or PUCCH. In addition, the TDD patternchange request may include a target frequency band identifier, a targetcell identifier (e.g., of the cell on which communications are causingthe MPE event), a desired target TDD pattern, etc. In addition, in anexample, uplink modifying component 254 can receive the modified TDDpattern from the first cell or second cell (e.g., from associated basestation(s)) in downlink control information (DCI)-based slot formatindicator (SFI) indication. The modified TDD pattern may be indicatedfor multiple cells in a target frequency band. For example, as describedabove an further herein, the TDD pattern may be defined such that cellswith better MPE condition can be allocated with more uplink symbols.

In this example, in method 400, optionally at Block 414, the at leastone CC can be communicated over based on the modified TDD pattern. In anaspect, communicating component 242, e.g., in conjunction withprocessor(s) 212, memory 216, transceiver 202, etc., can communicateover the at least one CC of the multiple CCs based on the modified TDDpattern. For example, using TDD patterns that remove some uplinktransmission occasions for cell 1 can assist in avoiding or remediatingthe MPE event in communications with cell 1. In one example, modifyingthe TDD pattern may be used in conjunction with, or alternatively to,beam switching (e.g., or where beam switching is not successful), etc.An example is shown in FIG. 7 .

FIG. 7 illustrates an example of a communication timeline 700 ofcommunications between gNBs and a UE, as well as TDD patterns 702 and704 configured for the UE to use in communicating with the gNBs. Incommunication timeline 700, gNBs and UE can communicate according to TDDpattern A 702, which defines a pattern for cell 0 and cell 1 ininter-band CA, where both cells are configured for communications in aset of symbols according to the following pattern: downlink symbol,flexible symbol, uplink symbol, uplink symbol. The UE can transmit a MPEreport and/or request for a new TDD pattern in timeline 700, which canbe based on detecting a MPE event with cell 1 and/or on a related CCand/or beam. As described, in an example, the UE can transmit the MPEreport and/or request for new TDD pattern to one or more of the gNBs.One or more gNBs can configure, based on receiving the report and/orrequest, a new TDD pattern, which can include TDD pattern B 704, whichdefines a pattern for cell 0 of symbols according to the followingpattern: uplink symbol, uplink symbol, uplink symbol, uplink symbol, andfor cell 1 according to the following pattern: downlink symbol, downlinksymbol, downlink symbol, downlink symbol. In this regard, the MPE eventcan be avoided or remediated based on the UE being only configured fordownlink symbols with cell 1. In addition, in this example, the removalof uplink symbols in the pattern for cell 1 can be addressed byproviding the additional uplink symbols in the pattern for cell 0.

FIG. 5 illustrates a flow chart of an example of a method 500 forreceiving an MPE report or associated request, in accordance withaspects described herein. In an example, a base station 102 can performthe functions described in method 500 using one or more of thecomponents described in FIGS. 1 and 3 .

In method 500, at Block 502, an MPE event on at least one CC of multipleCCs configured with a device in inter-band CA can be determined. In anaspect, MPE processing component 352, e.g., in conjunction withprocessor(s) 312, memory 316, transceiver 302, scheduling component 342,etc., can determine the MPE event on the at least one CC of the multipleCCs configured with the device in inter-band CA. For example, MPEprocessing component 352 can receive an indication of occurrence of theMPE event, one or more metrics from which MPE processing component 352can detect occurrence of the event (such as a P-MPR configured for thedevice, power class of the device, TRP of the device, etc.), and/or thelike. Moreover, for example, MPE processing component 352 can receivethe indication or other metrics from the device, from another basestation or cell, etc.

In determining the MPE event at Block 502, optionally at Block 504, anindication to perform beam switching for the device can be received fromanother cell having another CC of the multiple CCs configured with thedevice. In an aspect, MPE processing component 352, e.g., in conjunctionwith processor(s) 312, memory 316, transceiver 302, scheduling component342, etc., can receive, from another cell having another CC of themultiple CCs configured with the device, the indication to perform beamswitching for the device. For example, MPE processing component 352 canreceive the indication from another cell over a backhaul link. Forexample, the device may not be experiencing MPE event with the anothercell, and thus this cell can communicate the indication to the cell ofbase station 102, so that the device does not have to violate MPE totransmit the indication to the cell of base station 102.

In this example, in method 500, optionally at Block 506, a beamswitching command to switch to a new beam for uplink communications canbe transmitted to the device based on determining the MPE event. In anaspect, scheduling component 342, e.g., in conjunction with processor(s)312, memory 316, transceiver 302, etc., can transmit, to the device andbased on determining the MPE event, the beam switching command to switchto the new beam for uplink communications. For example, MPE processingcomponent 352 can determine the new beam that has different spatialparameters than a current or previous beam, as described, so that the UE104 can use the new beam to avoid or remediate the MPE event.

In one example, MPE processing component 352 can determine the new beambased on parameters indicated in an MPE report or beam switching requestthat was transmitted the another cell and provided to the cell of basestation 102. For example, the one or more parameters may include a bandidentifier (e.g., from FrequencyInfoUL), cell identifier(s), bandwidthpart (BWP) identifier(s) of a BWP used for the CC, old uplink beamidentifier(s), new uplink beam identifiers(s) (e.g., requested to beused in communicating with the cell over the CC), etc. For example, MPEprocessing component 352 can at least one of determine the new beam forone or more cells using the frequency band or BWP, determine the newbeam based on indicated new beam identifiers, etc. In any case,scheduling component 342 can transmit the beam switching command to thedevice.

In another example, in determining the MPE event at Block 502,optionally at Block 508, a MPE report or an associated request can bereceived from the device. In an aspect, MPE processing component 352,e.g., in conjunction with processor(s) 312, memory 316, transceiver 302,scheduling component 342, etc., can receive the MPE report or theassociated request from the device. For example, the request can includea beam switching request, a request for a new TDD pattern, etc. Forexample, the MPE report and/or associated request may include one ormore parameters based on which a cell, frequency band, beam, etc.related to the MPE can be determined. MPE processing component 352 canuse this information to determine another cell to which to transmit orforward the MPE report, associated request, indication to switch beams,etc. For example, scheduling component 342 can know which cells areproviding which bands, BWPs, etc. and MPE processing component 352 candetermine to transmit the MPE report, associated request, etc. to thecells providing a band, BWP, etc. related to the MPE event.

In this example, in method 500, optionally at Block 510, an indicationto perform beam switching for the device can be transmitted to anothercell having another one of the multiple CCs configured with the device.In an aspect, MPE processing component 352, e.g., in conjunction withprocessor(s) 312, memory 316, transceiver 302, scheduling component 342,etc., can transmit, to another cell having another one of the multipleCCs configured with the device, the indication to perform beam switchingfor the device. For example, MPE processing component 352 can transmitthe indication over a backhaul link to the another cell. The indicationmay include the MPE report, the associated request, or othercorresponding parameters, such to cause the another cell to perform beamswitching with the device, as described above. In one example, indetermining the MPE event at Block 502, multiple cells to which the MPEevent relates can be determined, and the MPE processing component 352can accordingly transmit the indication to one or more other cells(e.g., the cells identified from the MPE report as relating to the MPEevent).

In another example, receiving the MPE report or associated request atBlock 508 can include receiving a request for a new TDD pattern. In thisexample, in method 500, optionally at Block 512, a modified TDD patterncan be generated based on the MPE report or associated request. In anaspect, MPE processing component 352, e.g., in conjunction withprocessor(s) 312, memory 316, transceiver 302, scheduling component 342,etc., can generate, based on the MPE report or associated request, themodified TDD pattern. For example, as described, MPE processingcomponent 352 can generate the modified TDD pattern to decrease orremove uplink symbols for a cell related to the MPE event and/or toincrease uplink symbols with other cells. Moreover, for example, the MPEreport or associated request may include a target cell identifier thatidentifies a cell for which a new TDD pattern is desired (e.g., a cellrelated to the MPE event). For example, the cell related to the MPEevent can include a cell having uplink communications configured in a CCand/or using a beam that may be causing a detected or potential MPEevent, as described above. In this example, MPE processing component 352can generate the modified TDD pattern at least for the identified cell.In yet another example, the MPE report or associated request may includea target frequency band identifier that identifies a frequency band forwhich a new TDD pattern is desired (e.g., for all cells in the frequencyband that are associated with the inter-band CA), and MPE processingcomponent 352 can generate the modified TDD pattern at least for thecells in the identified target frequency band.

In method 500, optionally at Block 514, an indication of the modifiedTDD pattern can be transmitted to the device. In an aspect, schedulingcomponent 342, e.g., in conjunction with processor(s) 312, memory 316,transceiver 302, etc., can transmit an indication of the modified TDDpattern to the device. In this regard, the device can receive the TDDpattern and can communicate with a cell of base station 102 and/or othercells in inter-band CA based on the new TDD pattern, as described.

FIG. 8 is a block diagram of a MIMO communication system 800 including abase station 102 and a UE 104. The MIMO communication system 800 mayillustrate aspects of the wireless communication access network 100described with reference to FIG. 1 . The base station 102 may be anexample of aspects of the base station 102 described with reference toFIG. 1 . The base station 102 may be equipped with antennas 834 and 835,and the UE 104 may be equipped with antennas 852 and 853. In the MIMOcommunication system 800, the base station 102 may be able to send dataover multiple communication links at the same time. Each communicationlink may be called a “layer” and the “rank” of the communication linkmay indicate the number of layers used for communication. For example,in a 2×2 MIMO communication system where base station 102 transmits two“layers,” the rank of the communication link between the base station102 and the UE 104 is two.

At the base station 102, a transmit (Tx) processor 820 may receive datafrom a data source. The transmit processor 820 may process the data. Thetransmit processor 820 may also generate control symbols or referencesymbols. A transmit MIMO processor 830 may perform spatial processing(e.g., precoding) on data symbols, control symbols, or referencesymbols, if applicable, and may provide output symbol streams to thetransmit modulator/demodulators 832 and 833. Each modulator/demodulator832 through 833 may process a respective output symbol stream (e.g., forOFDM, etc.) to obtain an output sample stream. Eachmodulator/demodulator 832 through 833 may further process (e.g., convertto analog, amplify, filter, and upconvert) the output sample stream toobtain a DL signal. In one example, DL signals frommodulator/demodulators 832 and 833 may be transmitted via the antennas834 and 835, respectively.

The UE 104 may be an example of aspects of the UEs 104 described withreference to FIGS. 1-2 . At the UE 104, the UE antennas 852 and 853 mayreceive the DL signals from the base station 102 and may provide thereceived signals to the modulator/demodulators 854 and 855,respectively. Each modulator/demodulator 854 through 855 may condition(e.g., filter, amplify, downconvert, and digitize) a respective receivedsignal to obtain input samples. Each modulator/demodulator 854 through855 may further process the input samples (e.g., for OFDM, etc.) toobtain received symbols. A MIMO detector 856 may obtain received symbolsfrom the modulator/demodulators 854 and 855, perform MIMO detection onthe received symbols, if applicable, and provide detected symbols. Areceive (Rx) processor 858 may process (e.g., demodulate, deinterleave,and decode) the detected symbols, providing decoded data for the UE 104to a data output, and provide decoded control information to a processor880, or memory 882.

The processor 880 may in some cases execute stored instructions toinstantiate a communicating component 242 (see e.g., FIGS. 1 and 2 ).

On the uplink (UL), at the UE 104, a transmit processor 864 may receiveand process data from a data source. The transmit processor 864 may alsogenerate reference symbols for a reference signal. The symbols from thetransmit processor 864 may be precoded by a transmit MIMO processor 866if applicable, further processed by the modulator/demodulators 854 and855 (e.g., for SC-FDMA, etc.), and be transmitted to the base station102 in accordance with the communication parameters received from thebase station 102. At the base station 102, the UL signals from the UE104 may be received by the antennas 834 and 835, processed by themodulator/demodulators 832 and 833, detected by a MIMO detector 836 ifapplicable, and further processed by a receive processor 838. Thereceive processor 838 may provide decoded data to a data output and tothe processor 840 or memory 842.

The processor 840 may in some cases execute stored instructions toinstantiate a scheduling component 342 (see e.g., FIGS. 1 and 3 ).

The components of the UE 104 may, individually or collectively, beimplemented with one or more ASICs adapted to perform some or all of theapplicable functions in hardware. Each of the noted modules may be ameans for performing one or more functions related to operation of theMIMO communication system 800. Similarly, the components of the basestation 102 may, individually or collectively, be implemented with oneor more application specific integrated circuits (ASICs) adapted toperform some or all of the applicable functions in hardware. Each of thenoted components may be a means for performing one or more functionsrelated to operation of the MIMO communication system 800.

The following aspects are illustrative only and aspects thereof may becombined with aspects of other embodiments or teaching described herein,without limitation.

Aspect 1 is a method for wireless communication including detecting aMPE event on at least one of multiple CCs configured with a first cellin inter-band CA, and transmitting, based on detecting the MPE event,one of a MPE report or a beam switching request to a second cell on adifferent one of the multiple CCs.

In Aspect 2, the method of Aspect 1 includes receiving, over the one ofthe multiple CCs and based on transmitting the MPE report or the beamswitching request, a beam switching command from the first cell toswitch to a new beam, and transmitting an uplink transmission to thefirst cell based on the new beam.

In Aspect 3, the method of any of Aspects 1 or 2 includes wherein thefirst cell in inter-band CA uses a first frequency band which has atleast a first CC, and the second cell in inter-band CA uses the first ora second frequency band which has at least a second CC.

In Aspect 4, the method of any of Aspects 1 to 3 includes wherein theMPE report or the beam switching request indicates a band identifier, atleast one cell identifier, at least one bandwidth part identifier, atleast one uplink beam identifier of an original uplink beam, or at leastone new beam identifier of a new uplink beam.

In Aspect 5, the method of Aspect 4 includes wherein the band identifieridentifies multiple cells or CCs on which the MPE event is detected, andfurther comprising, receiving, over the one of the multiple CCs andbased on transmitting the MPE report or the beam switching request, abeam switching command from the first cell or the multiple cells toswitch to new beams on the multiple cells or CCs.

In Aspect 6, the method of any of Aspects 1 to 5 includes whereintransmitting the MPE report or the beam switching request includestransmitting the MPE report or the beam switching request on a MAC CE, aPUCCH, or layer 3 reporting.

In Aspect 7, the method of any of Aspects 1 to 6 includes transmitting,based on detecting the MPE event, one of the MPE report or the beamswitching request to the first cell on the one of the multiple CCs.

In Aspect 8, the method of any of Aspects 1 to 7 includes transmitting,based on detecting the MPE event, a request to change a TDD pattern of acollection of symbols to at least one of the first cell or the secondcell.

In Aspect 9, the method of Aspect 8 includes receiving, from at leastone of the first cell or the second cell and in response to the request,a modified TDD pattern for the collection of symbols, and communicatingover the one of the multiple CCs based on the modified TDD pattern.

In Aspect 10, the method of any of Aspects 8 or 9 includes wherein therequest identifies the first cell as a target cell for the change in TDDpattern.

In Aspect 11, the method of any of Aspects 8 to 10 includes wherein therequest indicates the change in TDD pattern.

Aspect 12 is a method for wireless communication including determining aMPE event on one of multiple CCs configured with a device in inter-bandCA, and transmitting, to the device and based on detecting the MPEevent, a beam switching command to switch to a new beam for uplinkcommunications.

In Aspect 13, the method of Aspect 12 includes wherein determining theMPE event is based at least in part on receiving, from another cellhaving another one of the multiple CCs configured with the device, anindication to perform beam switching for the device.

In Aspect 14, the method of any of Aspects 12 or 13 includes whereindetermining the MPE event includes receiving a MPE report or beamswitching request from the device.

In Aspect 15, the method of any of Aspects 12 to 14 includes receiving,from the device, a request to change a TDD pattern of a collection ofsymbols.

In Aspect 16, the method of Aspect 15 includes generating, based atleast in part on the request, a modified TDD pattern for the collectionof symbols, and transmitting an indication of the modified TDD patternto the device.

In Aspect 17, the method of any of Aspects 15 or 16 includes wherein therequest identifies a target cell for the change in TDD pattern.

In Aspect 18, the method of any of Aspects 15 to 17 includes wherein therequest indicates the change in TDD pattern.

Aspect 19 is a method for wireless communication including determining aMPE event on one of multiple CCs configured with a device in inter-bandCA, and transmitting, to another cell having another one of the multipleCCs configured with the device, an indication to perform beam switchingfor the device.

In Aspect 20, the method of Aspect 19 includes wherein determining theMPE event includes receiving a MPE report or beam switching request fromthe device.

In Aspect 21, the method of Aspect 20 includes wherein the MPE report orthe beam switching request indicates one or more parameters including atleast one of a band identifier, at least one cell identifier, at leastone bandwidth part identifier, at least one uplink beam identifier of anoriginal uplink beam, or at least one new beam identifier of a newuplink beam, and further comprising determining the another cell basedat least in part on the one or more parameters.

In Aspect 22, the method of Aspect 21 includes wherein the bandidentifier identifies multiple cells or CCs on which the MPE event isdetected, and further comprising, transmitting, to the multiple cells,the indication to perform beam switching for the device.

In Aspect 23, the method of any of Aspects 20 to 22 includes whereinreceiving the MPE report or the beam switching request includesreceiving the MPE report or the beam switching request on a MAC CE, aPUCCH, or layer 3 reporting.

Aspect 24 is an apparatus for wireless communication including atransceiver, a memory configured to store instructions, and one or moreprocessors communicatively coupled with the memory and the transceiver,wherein the one or more processors are configured to detect a MPE eventon at least one of multiple CCs configured with a first cell ininter-band CA, and transmit, based on detecting the MPE event, one of aMPE report or a beam switching request to a second cell on a differentone of the multiple CCs.

In Aspect 25, the apparatus of Aspect 24 includes wherein the one ormore processors are further configured to receive, over the one of themultiple CCs and based on transmitting the MPE report or the beamswitching request, a beam switching command from the first cell toswitch to a new beam, and transmit an uplink transmission to the firstcell based on the new beam.

In Aspect 26, the apparatus of any of Aspects 24 or 25 includes whereinthe first cell in inter-band CA uses a first frequency band which has atleast a first CC, and the second cell in inter-band CA uses the first ora second frequency band which has at least a second CC.

In Aspect 27, the apparatus of any of Aspects 24 to 26 includes whereinthe MPE report or the beam switching request indicates a bandidentifier, at least one cell identifier, at least one bandwidth partidentifier, at least one uplink beam identifier of an original uplinkbeam, or at least one new beam identifier of a new uplink beam.

M Aspect 28, the apparatus of Aspect 27 includes wherein the bandidentifier identifies multiple cells or CCs on which the MPE event isdetected, and wherein the one or more processors are further configuredto receive, over the one of the multiple CCs and based on transmittingthe MPE report or the beam switching request, a beam switching commandfrom the first cell or the multiple cells to switch to new beams on themultiple cells or CCs.

In Aspect 29, the apparatus of any of Aspects 24 to 28 includes whereinthe one or more processors are configured to transmit the MPE report orthe beam switching request on a MAC CE, a PUCCH, or layer 3 reporting.

In Aspect 30, the apparatus of any of Aspects 24 to 29 includes whereinthe one or more processors are further configured to transmit, based ondetecting the MPE event, one of the MPE report or the beam switchingrequest to the first cell on the one of the multiple CCs.

In Aspect 31, the apparatus of any of Aspects 24 to 30 includes whereinthe one or more processors are further configured to transmit, based ondetecting the MPE event, a request to change a TDD pattern of acollection of symbols to at least one of the first cell or the secondcell.

In Aspect 32, the apparatus of Aspect 31 includes wherein the one ormore processors are further configured to receive, from at least one ofthe first cell or the second cell and in response to the request, amodified TDD pattern for the collection of symbols, and communicate overthe one of the multiple CCs based on the modified TDD pattern.

In Aspect 33, the apparatus of any of Aspects 31 or 32 includes whereinthe request identifies the first cell as a target cell for the change inTDD pattern.

In Aspect 34, the apparatus of any of Aspects 31 to 33 includes whereinthe request indicates the change in TDD pattern.

Aspect 35 is an apparatus for wireless communication including atransceiver, a memory configured to store instructions, and one or moreprocessors communicatively coupled with the memory and the transceiver,wherein the one or more processors are configured to determine a MPEevent on one of multiple CCs configured with a device in inter-band CA,and transmit, to the device and based on detecting the MPE event, a beamswitching command to switch to a new beam for uplink communications.

In Aspect 36, the apparatus of Aspect 35 includes wherein the one ormore processors are configured to determine the MPE event based at leastin part on receiving, from another cell having another one of themultiple CCs configured with the device, an indication to perform beamswitching for the device.

In Aspect 37, the apparatus of any of Aspects 35 or 36 includes whereinthe one or more processors are further configured to determine the MPEevent at least in part by receiving a MPE report or beam switchingrequest from the device.

In Aspect 38, the apparatus of any of Aspects 35 to 37 includes whereinthe one or more processors are further configured to receive, from thedevice, a request to change a TDD pattern of a collection of symbols.

In Aspect 39, the apparatus of Aspect 38 includes wherein the one ormore processors are further configured to generate, based at least inpart on the request, a modified TDD pattern for the collection ofsymbols, and transmit an indication of the modified TDD pattern to thedevice.

In Aspect 40, the apparatus of any of Aspects 38 or 39 includes whereinthe request identifies a target cell for the change in TDD pattern.

In Aspect 41, the apparatus of any of Aspects 38 to 40 includes whereinthe request indicates the change in TDD pattern.

Aspect 42 is an apparatus for wireless communication including atransceiver, a memory configured to store instructions, and one or moreprocessors communicatively coupled with the memory and the transceiver,wherein the one or more processors are configured to determine a MPEevent on one of multiple CCs configured with a device in inter-band CA,and transmit, to another cell having another one of the multiple CCsconfigured with the device, an indication to perform beam switching forthe device.

In Aspect 43, the apparatus of Aspect 42 includes wherein the one ormore processors are configured to determine the MPE event includesreceiving a MPE report or beam switching request from the device.

In Aspect 44, the apparatus of Aspect 43 includes wherein the MPE reportor the beam switching request indicates one or more parameters includingat least one of a band identifier, at least one cell identifier, atleast one bandwidth part identifier, at least one uplink beam identifierof an original uplink beam, or at least one new beam identifier of a newuplink beam, and wherein the one or more processors are furtherconfigured to further determine the another cell based at least in parton the one or more parameters.

In Aspect 45, the apparatus of Aspect 44 includes wherein the bandidentifier identifies multiple cells or CCs on which the MPE event isdetected, and wherein the one or more processors are further configuredto transmit, to the multiple cells, the indication to perform beamswitching for the device.

In Aspect 46, the apparatus of any of Aspects 43 to 45 includes whereinthe one or more processors are further configured to receive the MPEreport or the beam switching request on a MAC CE, a PUCCH, or layer 3reporting.

Aspect 47 is an apparatus for wireless communication including means fordetecting a MPE event on at least one of multiple CCs configured with afirst cell in inter-band CA, and means for transmitting, based ondetecting the MPE event, one of a MPE report or a beam switching requestto a second cell on a different one of the multiple CCs.

In Aspect 48, the apparatus of Aspect 47 includes means for receiving,over the one of the multiple CCs and based on transmitting the MPEreport or the beam switching request, a beam switching command from thefirst cell to switch to a new beam, and means for transmitting an uplinktransmission to the first cell based on the new beam.

In Aspect 49, the apparatus of any of Aspects 47 or 48 includes whereinthe first cell in inter-band CA uses a first frequency band which has atleast a first CC, and the second cell in inter-band CA uses the first ora second frequency band which has at least a second CC.

In Aspect 50, the apparatus of any of Aspects 47 to 49 includes whereinthe MPE report or the beam switching request indicates a bandidentifier, at least one cell identifier, at least one bandwidth partidentifier, at least one uplink beam identifier of an original uplinkbeam, or at least one new beam identifier of a new uplink beam.

In Aspect 51, the apparatus of Aspect 50 includes wherein the bandidentifier identifies multiple cells or CCs on which the MPE event isdetected, and further comprising means for receiving, over the one ofthe multiple CCs and based on transmitting the MPE report or the beamswitching request, a beam switching command from the first cell or themultiple cells to switch to new beams on the multiple cells or CCs.

In Aspect 52, the apparatus of any of Aspects 47 to 51 includes whereinthe means for transmitting transmits the MPE report or the beamswitching request on a MAC CE, a PUCCH, or layer 3 reporting.

In Aspect 53, the apparatus of any of Aspects 47 to 52 includes meansfor transmitting, based on detecting the MPE event, one of the MPEreport or the beam switching request to the first cell on the one of themultiple CCs.

In Aspect 54, the apparatus of any of Aspects 47 to 53 includes meansfor transmitting, based on detecting the MPE event, a request to changea TDD pattern of a collection of symbols to at least one of the firstcell or the second cell.

In Aspect 55, the apparatus of Aspect 54 includes means for receiving,from at least one of the first cell or the second cell and in responseto the request, a modified TDD pattern for the collection of symbols,and means for communicating over the one of the multiple CCs based onthe modified TDD pattern.

In Aspect 56, the apparatus of any of Aspects 54 or 55 includes whereinthe request identifies the first cell as a target cell for the change inTDD pattern.

In Aspect 57, the apparatus of any of Aspects 54 to 56 includes whereinthe request indicates the change in TDD pattern.

Aspect 58 is an apparatus for wireless communication including means fordetermining a MPE event on one of multiple CCs configured with a devicein inter-band CA, and means for transmitting, to the device and based ondetecting the MPE event, a beam switching command to switch to a newbeam for uplink communications.

In Aspect 59, the apparatus of Aspect 58 includes wherein the means fordetermining determines the MPE event based at least in part onreceiving, from another cell having another one of the multiple CCsconfigured with the device, an indication to perform beam switching forthe device.

In Aspect 60, the apparatus of any of Aspects 58 or 59 includes whereinthe means for determining determines the MPE event at least in part byreceiving a MPE report or beam switching request from the device.

In Aspect 61, the apparatus of any of Aspects 58 to 60 includes meansfor receiving, from the device, a request to change a TDD pattern of acollection of symbols.

In Aspect 62, the apparatus of Aspect 61 includes means for generating,based at least in part on the request, a modified TDD pattern for thecollection of symbols, and means for transmitting an indication of themodified TDD pattern to the device.

In Aspect 63, the apparatus of any of Aspects 61 or 62 includes whereinthe request identifies a target cell for the change in TDD pattern.

In Aspect 64, the apparatus of any of Aspects 61 to 63 includes whereinthe request indicates the change in TDD pattern.

Aspect 65 is an apparatus for wireless communication including means fordetermining a MPE event on one of multiple CCs configured with a devicein inter-band CA, and means for transmitting, to another cell havinganother one of the multiple CCs configured with the device, anindication to perform beam switching for the device.

In Aspect 66, the apparatus of Aspect 65 includes wherein the means fordetermining determines the MPE event at least in part by receiving a MPEreport or beam switching request from the device.

In Aspect 67, the apparatus of Aspect 66 includes wherein the MPE reportor the beam switching request indicates one or more parameters includingat least one of a band identifier, at least one cell identifier, atleast one bandwidth part identifier, at least one uplink beam identifierof an original uplink beam, or at least one new beam identifier of a newuplink beam, and further comprising means for determining the anothercell based at least in part on the one or more parameters.

In Aspect 68, the apparatus of Aspect 67 includes wherein the bandidentifier identifies multiple cells or CCs on which the MPE event isdetected, and further comprising means for transmitting, to the multiplecells, the indication to perform beam switching for the device.

In Aspect 69, the apparatus of any of Aspects 66 to 68 includes whereinthe means for receiving receives the MPE report or the beam switchingrequest on a MAC CE, a PUCCH, or layer 3 reporting.

Aspect 70 is a computer-readable medium including code executable by oneor more processors for wireless communications, the code including codefor detecting a MPE event on at least one of multiple CCs configuredwith a first cell in inter-band CA, and transmitting, based on detectingthe MPE event, one of a MPE report or a beam switching request to asecond cell on a different one of the multiple CCs.

In Aspect 71, the computer-readable medium of Aspect 70 includes codefor receiving, over the one of the multiple CCs and based ontransmitting the MPE report or the beam switching request, a beamswitching command from the first cell to switch to a new beam, and codefor transmitting an uplink transmission to the first cell based on thenew beam.

In Aspect 72, the computer-readable medium of any of Aspects 70 or 71includes wherein the first cell in inter-band CA uses a first frequencyband which has at least a first CC, and the second cell in inter-band CAuses the first or a second frequency band which has at least a secondCC.

In Aspect 73, the computer-readable medium of any of Aspects 70 to 72includes wherein the MPE report or the beam switching request indicatesa band identifier, at least one cell identifier, at least one bandwidthpart identifier, at least one uplink beam identifier of an originaluplink beam, or at least one new beam identifier of a new uplink beam.

In Aspect 74, the computer-readable medium of Aspect 73 includes whereinthe band identifier identifies multiple cells or CCs on which the MPEevent is detected, and further comprising code for receiving, over theone of the multiple CCs and based on transmitting the MPE report or thebeam switching request, a beam switching command from the first cell orthe multiple cells to switch to new beams on the multiple cells or CCs.

In Aspect 75, the computer-readable medium of any of Aspects 70 to 74includes wherein the code for transmitting transmits the MPE report orthe beam switching request on a MAC CE, a PUCCH, or layer 3 reporting.

In Aspect 76, the computer-readable medium of any of Aspects 70 to 75includes code for transmitting, based on detecting the MPE event, one ofthe MPE report or the beam switching request to the first cell on theone of the multiple CCs.

In Aspect 77, the computer-readable medium of any of Aspects 70 to 76includes code for transmitting, based on detecting the MPE event, arequest to change a TDD pattern of a collection of symbols to at leastone of the first cell or the second cell.

In Aspect 78, the computer-readable medium of Aspect 77 includes codefor receiving, from at least one of the first cell or the second celland in response to the request, a modified TDD pattern for thecollection of symbols, and code for communicating over the one of themultiple CCs based on the modified TDD pattern.

In Aspect 79, the computer-readable medium of any of Aspects 77 or 78includes wherein the request identifies the first cell as a target cellfor the change in TDD pattern.

In Aspect 80, the computer-readable medium of any of Aspects 77 to 79includes wherein the request indicates the change in TDD pattern.

Aspect 81 is a computer-readable medium including code executable by oneor more processors for wireless communications, the code including codefor determining a MPE event on one of multiple CCs configured with adevice in inter-band CA, and transmitting, to the device and based ondetecting the MPE event, a beam switching command to switch to a newbeam for uplink communications.

In Aspect 82, the computer-readable medium of Aspect 81 includes whereinthe code for determining determines the MPE event based at least in parton receiving, from another cell having another one of the multiple CCsconfigured with the device, an indication to perform beam switching forthe device.

In Aspect 83, the computer-readable medium of any of Aspects 81 or 82includes wherein the code for determining determines the MPE event atleast in part by receiving a MPE report or beam switching request fromthe device.

In Aspect 84, the computer-readable medium of any of Aspects 81 to 83includes code for receiving, from the device, a request to change a timedivision duplexing (TDD) pattern of a collection of symbols.

In Aspect 85, the computer-readable medium of Aspect 84 includes codefor generating, based at least in part on the request, a modified TDDpattern for the collection of symbols, and code for transmitting anindication of the modified TDD pattern to the device.

In Aspect 86, the computer-readable medium of any of Aspects 84 or 85includes wherein the request identifies a target cell for the change inTDD pattern.

In Aspect 87, the computer-readable medium of any of Aspects 84 to 86includes wherein the request indicates the change in TDD pattern.

Aspect 88 is a computer-readable medium including code executable by oneor more processors for wireless communications, the code including codefor determining a MPE event on one of multiple CCs configured with adevice in inter-band CA, and transmitting, to another cell havinganother one of the multiple CCs configured with the device, anindication to perform beam switching for the device.

In Aspect 89, the computer-readable medium of Aspect 88 includes whereinthe code for determining determines the MPE event at least in part byreceiving a MPE report or beam switching request from the device.

In Aspect 90, the computer-readable medium of Aspect 89 includes whereinthe MPE report or the beam switching request indicates one or moreparameters including at least one of a band identifier, at least onecell identifier, at least one bandwidth part identifier, at least oneuplink beam identifier of an original uplink beam, or at least one newbeam identifier of a new uplink beam, and further comprising code fordetermining the another cell based at least in part on the one or moreparameters.

In Aspect 91, the computer-readable medium of Aspect 90 includes whereinthe band identifier identifies multiple cells or CCs on which the MPEevent is detected, and further comprising code for transmitting, to themultiple cells, the indication to perform beam switching for the device.

In Aspect 92, the computer-readable medium of any of Aspects 89 to 91includes wherein the code for receiving receives the MPE report or thebeam switching request on a MAC CE, a PUCCH, or layer 3 reporting.

The above detailed description set forth above in connection with theappended drawings describes examples and does not represent the onlyexamples that may be implemented or that are within the scope of theclaims. The term “example,” when used in this description, means“serving as an example, instance, or illustration,” and not “preferred”or “advantageous over other examples.” The detailed description includesspecific details for the purpose of providing an understanding of thedescribed techniques. These techniques, however, may be practicedwithout these specific details. In some instances, well-known structuresand apparatuses are shown in block diagram form in order to avoidobscuring the concepts of the described examples.

Information and signals may be represented using any of a variety ofdifferent technologies and techniques. For example, data, instructions,commands, information, signals, bits, symbols, and chips that may bereferenced throughout the above description may be represented byvoltages, currents, electromagnetic waves, magnetic fields or particles,optical fields or particles, computer-executable code or instructionsstored on a computer-readable medium, or any combination thereof.

The various illustrative blocks and components described in connectionwith the disclosure herein may be implemented or performed with aspecially programmed device, such as but not limited to a processor, adigital signal processor (DSP), an ASIC, a field programmable gate array(FPGA) or other programmable logic device, a discrete gate or transistorlogic, a discrete hardware component, or any combination thereofdesigned to perform the functions described herein. A speciallyprogrammed processor may be a microprocessor, but in the alternative,the processor may be any conventional processor, controller,microcontroller, or state machine. A specially programmed processor mayalso be implemented as a combination of computing devices, e.g., acombination of a DSP and a microprocessor, multiple microprocessors, oneor more microprocessors in conjunction with a DSP core, or any othersuch configuration.

The functions described herein may be implemented in hardware, softwareexecuted by a processor, firmware, or any combination thereof. Ifimplemented in software executed by a processor, the functions may bestored on or transmitted over as one or more instructions or code on anon-transitory computer-readable medium. Other examples andimplementations are within the scope and spirit of the disclosure andappended claims. For example, due to the nature of software, functionsdescribed above can be implemented using software executed by aspecially programmed processor, hardware, firmware, hardwiring, orcombinations of any of these. Features implementing functions may alsobe physically located at various positions, including being distributedsuch that portions of functions are implemented at different physicallocations. Also, as used herein, including in the claims, “or” as usedin a list of items prefaced by “at least one of” indicates a disjunctivelist such that, for example, a list of “at least one of A, B, or C”means A or B or C or AB or AC or BC or ABC (i.e., A and B and C).

Computer-readable media includes both computer storage media andcommunication media including any medium that facilitates transfer of acomputer program from one place to another. A storage medium may be anyavailable medium that can be accessed by a general purpose or specialpurpose computer. By way of example, and not limitation,computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or otheroptical disk storage, magnetic disk storage or other magnetic storagedevices, or any other medium that can be used to carry or store desiredprogram code means in the form of instructions or data structures andthat can be accessed by a general-purpose or special-purpose computer,or a general-purpose or special-purpose processor. Also, any connectionis properly termed a computer-readable medium. For example, if thesoftware is transmitted from a website, server, or other remote sourceusing a coaxial cable, fiber optic cable, twisted pair, digitalsubscriber line (DSL), or wireless technologies such as infrared, radio,and microwave, then the coaxial cable, fiber optic cable, twisted pair,DSL, or wireless technologies such as infrared, radio, and microwave areincluded in the definition of medium. Disk and disc, as used herein,include compact disc (CD), laser disc, optical disc, digital versatiledisc (DVD), floppy disk and Blu-ray disc where disks usually reproducedata magnetically, while discs reproduce data optically with lasers.Combinations of the above are also included within the scope ofcomputer-readable media.

The previous description of the disclosure is provided to enable aperson skilled in the art to make or use the disclosure. Variousmodifications to the disclosure will be readily apparent to thoseskilled in the art, and the common principles defined herein may beapplied to other variations without departing from the spirit or scopeof the disclosure. Furthermore, although elements of the describedaspects and/or embodiments may be described or claimed in the singular,the plural is contemplated unless limitation to the singular isexplicitly stated. Additionally, all or a portion of any aspect and/orembodiment may be utilized with all or a portion of any other aspectand/or embodiment, unless stated otherwise. Thus, the disclosure is notto be limited to the examples and designs described herein but is to beaccorded the widest scope consistent with the principles and novelfeatures disclosed herein.

What is claimed is:
 1. An apparatus for wireless communication,comprising: a transceiver; a memory configured to store instructions;and one or more processors communicatively coupled with the memory andthe transceiver, wherein the one or more processors are configured to:detect a maximum permissible exposure (MPE) event on at least onecomponent carrier (CC) of multiple CCs, wherein the at least one CC isconfigured with a first cell in inter-band carrier aggregation (CA); andtransmit, based on detecting the MPE event and on a different CC of themultiple CCs, one of a MPE report or a beam switching request, whereinthe different CC is configured with a second cell in the inter-band CA.2. The apparatus of claim 1, wherein the one or more processors arefurther configured to: receive, over the at least one CC and based ontransmitting the MPE report or the beam switching request, a beamswitching command from the first cell to switch to a new beam; andtransmit an uplink transmission to the first cell based on the new beam.3. The apparatus of claim 1, wherein the first cell in inter-band CAuses a first frequency band which has at least a first CC, and thesecond cell in inter-band CA uses the first frequency band or a secondfrequency band which has at least a second CC.
 4. The apparatus of claim1, wherein the MPE report or the beam switching request indicates a bandidentifier, at least one cell identifier, at least one bandwidth partidentifier, at least one uplink beam identifier of an original uplinkbeam, or at least one new beam identifier of a new uplink beam.
 5. Theapparatus of claim 4, wherein the band identifier identifies multiplecells or CCs on which the MPE event is detected, and wherein the one ormore processors are further configured to receive, over the at least oneCC and based on transmitting the MPE report or the beam switchingrequest, a beam switching command from the first cell or the multiplecells to switch to new beams on the multiple cells or CCs.
 6. Theapparatus of claim 1, wherein the one or more processors are configuredto transmit the MPE report or the beam switching request on a mediaaccess control (MAC) control element (CE), a physical uplink controlchannel (PUCCH), or layer 3 reporting.
 7. The apparatus of claim 1,wherein the one or more processors are further configured to transmit,based on detecting the MPE event, one of the MPE report or the beamswitching request to the first cell on the at least one CC.
 8. Theapparatus of claim 1, wherein the one or more processors are furtherconfigured to transmit, based on detecting the MPE event, a request tochange a time division duplexing (TDD) pattern of a collection ofsymbols to at least one of the first cell or the second cell.
 9. Theapparatus of claim 8, wherein the one or more processors are furtherconfigured to: receive, from at least one of the first cell or thesecond cell and in response to the request, a modified TDD pattern forthe collection of symbols; and communicate over the at least one CCbased on the modified TDD pattern.
 10. The apparatus of claim 8, whereinthe request identifies the first cell as a target cell for the change inTDD pattern.
 11. The apparatus of claim 8, wherein the request indicatesthe change in TDD pattern.
 12. An apparatus for wireless communication,comprising: a transceiver; a memory configured to store instructions;and one or more processors communicatively coupled with the memory andthe transceiver, wherein the one or more processors are configured to:determine a maximum permissible exposure (MPE) event on at least onecomponent carrier (CC) of multiple CCs configured with a device ininter-band carrier aggregation (CA); and transmit, to the device andbased on the MPE event, a beam switching command to switch to a new beamfor uplink communications.
 13. The apparatus of claim 12, wherein theone or more processors are configured to determine the MPE event basedat least in part on receiving, from another cell having another CC ofthe multiple CCs configured with the device, an indication to performbeam switching for the device.
 14. The apparatus of claim 12, whereinthe one or more processors are configured to determine the MPE event atleast in part by receiving a MPE report or beam switching request fromthe device.
 15. The apparatus of claim 12, wherein the one or moreprocessors are further configured to receive, from the device, a requestto change a time division duplexing (TDD) pattern of a collection ofsymbols.
 16. The apparatus of claim 15, wherein the one or moreprocessors are further configured to: generate, based at least in parton the request, a modified TDD pattern for the collection of symbols;and transmit an indication of the modified TDD pattern to the device.17. The apparatus of claim 15, wherein the request identifies a targetcell for the change in TDD pattern.
 18. The apparatus of claim 15,wherein the request indicates the change in TDD pattern.
 19. Anapparatus for wireless communication, comprising: a transceiver; amemory configured to store instructions; and one or more processorscommunicatively coupled with the memory and the transceiver, wherein theone or more processors are configured to: determine a maximumpermissible exposure (MPE) event on at least one component carrier (CC)of multiple CCs configured with a device in inter-band carrieraggregation (CA); and transmit, to another cell having another CC of themultiple CCs configured with the device, an indication to perform beamswitching for the device.
 20. The apparatus of claim 19, wherein the oneor more processors are configured to determine the MPE event at least inpart by receiving a MPE report or beam switching request from thedevice.
 21. The apparatus of claim 20, wherein the MPE report or thebeam switching request indicates one or more parameters including atleast one of a band identifier, at least one cell identifier, at leastone bandwidth part identifier, at least one uplink beam identifier of anoriginal uplink beam, or at least one new beam identifier of a newuplink beam, and wherein the one or more processors are furtherconfigured to determine the another cell based at least in part on theone or more parameters.
 22. The apparatus of claim 21, wherein the bandidentifier identifies multiple cells or CCs on which the MPE event isdetermined, and wherein the one or more processors are furtherconfigured to transmit, to the multiple cells, the indication to performbeam switching for the device.
 23. The apparatus of claim 20, whereinthe one or more processors are configured to receive the MPE report orthe beam switching request on a media access control (MAC) controlelement (CE), a physical uplink control channel (PUCCH), or layer 3reporting.
 24. A method for wireless communications at a user equipment(UE), comprising: detecting a maximum permissible exposure (MPE) eventon at least one component carrier (CC) of multiple CCs, wherein the atleast one CC is configured with a first cell in inter-band carrieraggregation (CA); and transmitting, based on detecting the MPE event andon a different CC of the multiple CCs, one of a MPE report or a beamswitching request to a second cell on a different CC of the multipleCCs, wherein the different CC is configured with a second cell in theinter-band CA.
 25. The method of claim 24, further comprising:receiving, over the at least one CC and based on transmitting the MPEreport or the beam switching request, a beam switching command from thefirst cell to switch to a new beam; and transmitting an uplinktransmission to the first cell based on the new beam.
 26. The method ofclaim 24, wherein the first cell in inter-band CA uses a first frequencyband which has at least a first CC, and the second cell in inter-band CAuses the first frequency band or a second frequency band which has atleast a second CC.
 27. The method of claim 24, wherein the MPE report orthe beam switching request indicates a band identifier, at least onecell identifier, at least one bandwidth part identifier, at least oneuplink beam identifier of an original uplink beam, or at least one newbeam identifier of a new uplink beam.
 28. The method of claim 27,wherein the band identifier identifies multiple cells or CCs on whichthe MPE event is detected, and further comprising receiving, over the atleast one CC and based on transmitting the MPE report or the beamswitching request, a beam switching command from the first cell or themultiple cells to switch to new beams on the multiple cells or CCs. 29.The method of claim 24, wherein transmitting the MPE report or the beamswitching request includes transmitting the MPE report or the beamswitching request on a media access control (MAC) control element (CE),a physical uplink control channel (PUCCH), or layer 3 reporting.
 30. Themethod of claim 24, further comprising transmitting, based on detectingthe MPE event, one of the MPE report or the beam switching request tothe first cell on the at least one CC.